Sierra Wireless AirCard 555 - Manual (Page 120)

AirCard 555 Network Card User Guide
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The 1x indicator shows whether 1xRTT is
available in this area.
Where 1xRTT packet service is available,
you can make high speed Express Network
data connections, if your billing plan allows
for it. (Depending on your billing plan, there
may be a surcharge for Express Network
connections.)
Note that this indicator does not distinguish
between voice service and packet service.
If you are in an area where 1xRTT voice
service is available, this indicator may be
on although packet service is not available.
The Roaming Status indicator shows
whether you are roaming onto the network
of a service provider other than your own.
When the indicator is off (gray), you are
within the local coverage area of your
service provider. When the indicator is on
(solid black), you are in a “preferred”
roaming area. When the indicator is
blinking, you are within the coverage area
of a CDMA network but not in a “preferred”
roaming area.
Your coverage area and billing charges
depend upon your service provider and the
type of account you have. There may be
surcharges for roaming service that vary
based on whether you are in a preferred
roaming area or a non-preferred roaming
area. If there is no roaming agreement
between your service provider and the local
carrier, you may be unable to complete
calls in non-preferred roaming areas.
The In Use indicator shows whether a call is in progress. No icon is
displayed when the AirCard is idle. Otherwise, one of these icons is
displayed:
When the In Use indicator is a handset, a
voice call is in progress.
When the In Use indicator is a modem, a
data call is in progress.
Table 11-1: Connection Status Area Icons
Icon Meaning